Installing bar



Nov; 18, 1924. v

w. H. HUBBARD INSTALLING BAR Filed Nbv. 13, 1923 Patented Nov. 18, 1924.,

i are WILLIAM H. HUBBARD, or osnxosn, WISCONSIN.

INSTALLING Application filed November 13, 1923. Serial No. 674,515.

1 I T0 al'lwh o m it may concern: 4 7

Be it known that I, WILLIAM H. HUB- BARD, a c1t1zen of the United States, and resident of Oshkosh, in the county of Winne bago and State of Wisconsin, have invented certain new and useful Improvements in Installing Bars; and I do hereby declare that the followingjs a full, clear, and exact description thereof.

Thisinvent1on relates to installing de-- vice for concrete pavements.

Objects of this invention are to provide *iail' nstallingdevice for concrete pavements I which Wlll accurately maintain 1 the correct proportions of the pavement, which will temporarily hold the center strip of the pavement in correct position, and which may e adjusted to accommodate a curved center strip as, for instance, in forming a curve in the pavement. Further objectsare to provide an installing device for pavements which is adapted to rest upon the side boards used in installing the pavement and to correctly space the center strip, which is provided with extensible outwardly projecting portions to adapt the device for pavements having different widths, and which is provided with means for correctly holding the center portion of the device at the correct spacing from the subgrade or bottom of the channel in which the concrete is positioned, and which is so constructed that it will prevent undesirable projecting of the center strip above the surface of the finished pavement. An embodiment of the invention is shown in the accompanying drawings, in which Figure 1 s ows the device in postion. Figure 2 is a plan view of a corner of the frame.

Figure 3 is a plan view of the jointed centrally located member with the retaining bars 6 are adjustably carried. These side bars 6 may be locked in any desired position of adjustment relative to the side members 1 by any suitable means as, for instance, the set screws 7 which are threaded through the outer guides 5. These extensible bars 6 are upturned adjacent their ends and are provided with handles 8 by means of which the entire apparatus may be bodily lifted or maybe adjusted. These bars 6 are provided with means for engaging side boards 9 used in forming the pavement. In other words, they are provided with means for aligning with the marginal edges of the pavement and thus are adapted to maintain the proper width of pavement. As shown in Figure 1, one of the pairsof side bars 6 may be provided with channel shaped members 10 which straddle the corresponding side board 9. The other member may be provided with feet 11 which rest upon the .corresponding side board. A centrally lo- 'fingers, for lnstance 15, may be provided with an ofiset portion to accommodate the rib or channel 17 formed in the center strlp if this type of center strip is employed.

In forming straight concrete pavements, it is desirable to maintain the jointed member 12 in a straight condition. This is readilysecured by providing a channel member 18 which is adapted to be positioned over the jointed member 12, as shown in Figures 1 and 1 and to thus hold such jointed member straight. If desired, certain of the pivot pins of the links may be provided with threaded or bolt-like upwardly extending projections 19 (see Figure 4) upon which nuts 20 are screwed tothus hold'the member 18 in position.

,When a curved concrete pavement is formed, the member 18 is removed and the jointed member 12 is flexed to conform to the curvature of the center strip 16. It 15 or fingers 14 and 15,the V readily appreciated that a slight inward bowing of the side frame members 1 will accommodate this flexing of the central member 12.

If desired, the channel member 18 may be provided with spaced straps transversely extending U-shaped member 22 may be located between such straps and the channel member 18. This transverse member 22 may be provided in its downwardly ro'ecting arms with slots 23 adapted to old spacer strips if such StrlPSe; are to be em loyed.

upporting feet 23 are carried by the side members 1 and are adapted to engage the subgrade, or in other Words, the bottom of the channel in'which the concrete is poured to thus properly space the central portion of the device from the bottom of the concrete receiving channel and to prevent downward bowing of such central portions.

It will thus be seen that an installing device for concrete pavements has been provided which is extremely simple" and easily operated, which is of rugged construction, which will maintain the correct positioning of the center strip both with regard to the marginal edges of the roadway, and also with regard to the depth of seating of such central strip. lit will further be seen that the device may be readily moved along as the roadway is formed and may be most easily manipulated.

Although the invention hasbeen described in considerable detail, it is to be understood that the invention may be variously em bodied and is, therefore, to be limited only as claimed.

I claim:

1. An installing device for concrete pavements having a center strip comprising a rigid frame, a pair of extensible supports projecting from the ends of said frame and having portions adapted to align with themarginal edges of the pavement, and a centrally located member for temporarily holding said center strip.

2. An installing device for concrete avements having a center strip comprising a 21, and a rename rigid rectangular frame, extension members carried by aid frame and adapted to prooutwardly from the ends thereof and having portions aligning with the margins of said pavement, a centrally located'member carried b said frame, and a plurality of downwar ly projecting spaced fingers carried by said member for temporarily hold- .ing said center strip in position. i

3.. An installing device for concrete pave ments having a center strip comprislng a rigid rectangular frame having outwardly projecting portions adapted to align with the margins of said pavement, and a jointed centrally located member having downwardly projecting means for temporarily holding said centerstrip, whereby said central member may be curved when it is desired to fit a curved center strip.

4. An installing device for concrete pavements comprising a rigid rectangular frame, guides carried by the side of said frame, bars slidably carried in said guides and adapted to project from the ends of said frame and having means adapted to align with the marginal edges of saidpavement, means for locking said bars in ad usted position, a centrally located jointed member having a plurality of fingers for temporarily holding said strip 1n position, and

removable means for holding said jointed member straight.

5. An installing device for concrete pavements having a center strip comprising a rigidrectangular frame, a pair of side bars adjustably' carried by each end of the frame and adapted to project from such frame and having portions adapted to align with the marginal edges of the pavement, a centrally located member for temporarily holding said center strip, and supporting feet carried by said side members and adapted to support said side membersintermediate their ends.

In testimony that l claim the foregoing I have hereunto set In hand at Oshkosh, in the "county of Winne ago and State of Wiswrnnran n. HUBBARD. 

